Method or process for finishing bearing-rollers.



R. SMITH. mncraonon PROCESS r011 FINISHING BEARING ROLLERS.

I APPLICATION I'ILED JAN. 25, 1910.

" ,122,433 Patented Dec.29,1914,

2 8HEBTSSHEBT 1.

rwenrov SMITH. METHOD OR PBOGESS FOB FINISHING BEARING ROLLERS.

APPLICATION FILED JAN. 25, 1910. 1 ,1 22,433.

Patented Dec. 29, 1914..

2 SHEETS-SHEET 2.

7 flwsm *m MW M lmmmp RoE R smrrizforsham; RAPIDS, MICHIGAN, ASSIGNOR,BY nmEoT AND ,MESNE ASSIGNMENTS, oE oN -HALE o HERBERT B. GILLETTE, orGRAND RAPIDS, M10111- can, AND oNE-EAL To THE MICHIGAN TRUST COMPANY,RECEIVER or n. o.

7 PETERS MANUFACTURING COMPANY.

METHOD OB PROCESS FOR FINISHING BEARING-ROLLERS.-

To all whom it may concern:

Be it known that 1, ROBERT SMITH, a citizen of :the United States,residing at Grand Rapids, Michigan,-have invented certain new and usefulImprovements in Methods or Processes for Finishing Bearing- Rollers, ofwhich the following is a specification. I v

This invention relates to improvements in methods-or processes forfinishing bearing rollers.

The main object of this invention is to provide an improved method orprocess for finishing bearing rollers which enables the rapid andeconomical production of substantially perfect rollers.

Further objects relative to details will definitely appear from thedetailed description to follow, in which the details of my improvedmethod or process are set forth.

In carrying out my improved method or process I preferably employ theapparatus or machine illustrated in the accompanying drawing, in which:

Figure 1 is a plan view. Fig. 2 is a vertical section taken on a linecorresponding to line 22 of Fig. 1. Fig. 3 is a detail of the member 12.Fig. 4 is a detail of the member 13. Fig. 5 is a sideelevation of one ofthe rollers which the structure illustrated is especially designed tofinish.

In carrying out my improved process, the rollers are first formed by ascrew machine or the like. They are then placed in a machine havingcoacting finishing members adapted to receive them along with masterrollers of high-speed steel or the like, and brought to substantiallyuniform size. said finishing members is revoluble, or movable, so thatthe rollers are revolved under pressure, the feeding finishing memherbeing preferably adapted to remove surplus metal. The rollers are thentaken from the machine, case hardened and replaced in the machine, afeeding member having a finishing surface being substituted for thecutting member. This removes any irregularity which may have beenproduced by the case hardening operation and reduces the rollers to auniform sizeand shape and polishes the same.

Specification of Letters Patent.

At least one of I v Patented Dec. 29, 1914. Application filed January25, 1910. Serial No. 540,049.

I will now describe the machine which I.

preferably use for this purpose, the same being made the subject matterof my application for Letters Patent, Serial No. 540,050, filed Jan. 25,1910, which has matured into Patent No. 1,098,336, granted May 26,1914-.

In the accompanying drawing, similar reference characters refer tosimilar parts throughout the several views; and the sectional views aretaken looking in the direction of the little arrows at the ends of thesection lines.

Referring to the drawing, the support or base 1 is provided withprojecting ears 2, adapted to receive the securing bolts 3 by meansof.which the support is secured upon a table, or other suitable bed.

The-support lis provided with an annular seat 4. In this seat I arrangea finishing member 5, preferably a ring having an annular finishingsurface 6 adapted to act on one end of the rollers to be finished, as at8. These rollers illustrated are conical and of uniform taper from endto end, and

provided with conical small ends 8 and convex large ends 9, (see Fig.5). On this member 5 I arrange the finishing member 10 which ispreferably a ring having an inclined annular finishing surface 11thereon, adapted to act on the sides of the rollers 7. I also providefinishing members12 and 13 for the large ends of the rollers. Thesefinishing members are provided with annular finishing surfaces 14 and15, respectively, the surface 14 of the member shown being toothed,while that of the member 13 is a smooth or polishing surface, as 15.

The finishing surfaces 14 and 15 of the members 12 and 13 illustratedare curved in cross section to form the convex ends of the rollers. Thefinishing surfaces 6 and 11 of the members 5 and 10 illustrated aresmooth surfaces. These finishing members are formed of steel, preferablyof tool steel.

A coacting rotatable finishing member 16 is provided, having a conicalfinishing surface 17, which acts on the sides of the rollers to befinished. A feed member 18 is provided for the finishing members 12 and13, the

feed member being provided with a seat 19 adapted to receive either ofthe memberswith a lever 20 having a hole 21 therein adapted to beengaged over the pin 22' on the support 1.

The rotatable member 16 is provided with a driving shaft 23, the drivingmeans not being here illustrated. The master rollers are shown at 24.These master rollers are of the size of the finished rollers or slightlysmaller. These master rollers are preferably made of high speed steel.In carrying out my improved method, the rollers are just turned out witha screw machine or the like. They are then placed in the machinedescribed, and the cutting member 12 inserted in the feed member 19.This is gradually fed down, and as the metal is forced up on the rollersby the finishing members acting on the sides thereof, it is cut orground off by the member 12. The

finishing member 13 is then substituted for the cutting member and therollers replaced in the machine along with the master rollers, and themachine operated to bring the rollers to uniform size. The rollers arethen removed from the machine and case hardened. They are then replacedin the machine along with the master rollers, the polishing or finishingmember 13' being used, the machine again operated until the rollers arebrought to a nice polish or finish and any irregularityor roughnessproduced by the case hardening removed. By this process I am enabled tovery rapidly and economically produce perfect rollers which have a veryfine finish throughout.

. The machine illustrated is adapted for the finishing of taperedrollers having conical small ends and convex large ends, as shown in thedrawing.

Having-thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. The method of finishing conical bearing rollers, consisting ofassociating and arranging a plurality of such rough cut rollers insubstantially their coacting relation with master rollers of correctdimensionsv interspersed therebetween, acting on the same by rotatingfinishing members conformed thereto in contact with the sides thereofand thereby revolving said rolls, applying a cutting tool to the ends ofsaid rollers when thus revolving, thereafter applying a burnishing toolto the ends of said rolls with said master roller present, hardeningsaid rolls by a suitable process, and again associating and arrangingthe said hardened rolls with master rolls and subjecting them to aburnishing contact withsuitable rotating finishing tools on their sidesand to a. burbers conformed thereto in contact with the sides thereofand thereby revolving said rolls, applying a cutting tool to the ends ofsaid rollers when thus revolving, thereafter applying a burnishing toolto the ends of said rolls with said master rollers present, hardeningsaid rolls by a suitable process, and again associating and arrangingthe said hardened rolls with master rolls and subjecting them to aburnishing contact with suitable rotating finishing tools on their sidesand to a burnishing tool on their ends, while revolving, to finish thesame, as specified.

3. The method of finishing conical bearing rollers, consisting ofassociating and arranging a plurality of such rough cut rollers insubstantially their coacting relation, acting on the same by rotatingfinishing members conformed thereto in contact with the sides thereofand thereby revolving said rolls, applying a cutting tool to the ends ofsaid rollers when thus revolving, hardening said rolls by a suitableprocess, and again associating and arranging the said hardened rollswith master rolls, and subjecting them to a burnishing contact withsuitable rotating finishing tools on their sides and to a burnishingtool on their ends, while revolving, to finish the same, as specified.

4; The method of finishing conical bearing rollers, consisting ofassociating and arranging a plurality of such rough cut rollers insubstantially their coacting relation with master rollers of correctdimensions interspersed therebetween, acting on the same by rotatingfinishing members conformed thereto in contact with the sides thereofand thereby revolving said rolls, applying acutting tool to the ends ofsaid rollers when thus revolving, and thereafter applying a burnishingtool to the ends of said rolls with said master rollers present.

5 The method of finishing conical bearing rollers, consisting ofassociating and arranging a plurality of such rough cut roll-, ers insubstantially their coacting relation with master rollers of correctdimensions interspersed therebetween, acting on the same .by rotatingfinishing members conformed thereto in contact with the sides thereofand thereby revolving said rolls, thereafter applying a burnishing toolto the end of said rolls with said master rollers present, hardeningsaid rolls by a suitable process, and again associating and arrangingthe said hardened rolls with master rolls, and subjecting them to aburnishing contact with suitable rotating finishing "tools on theirsides and to a burnishing tool on their ends, while revolving, to finishthe same, as specified.

6. The method of finishing conical bearing rollers, consisting ofassociating and arranging a plurality of such rough cut rollers insubstantially their coacting relation, acting on the same by rotatingfinishing members conformed thereto in contact with the sides thereofand thereby revolving said rolls, thereafter ap lying a burnishing toolto the ends of said rolls with said master rollers present, hardeningsaid rolls by a suitable process, and again associating and arrangingthe said hardened rolls with masterrolls and subjectin them to aburnishing contact with suita le rotating finishing tools on their sidesand to a burnishing tool on their ends, while revolving, to finish thesame, as specified.

7 The method of finishing conical bearing rollers, consisting ofassociating and a1.- ranging a plurality of such rough cut rollers insubstantially their coactin relation, acting on the same by rotatingfinis ing members conformed thereto in contact with the sides thereofand thereby revolving said rolls, hardening said rolls by a suitableprocess, and again associating and arranging the'said hardened rollswith master rolls and subjecting them to a burnishing contact withsuitable rotating finishing tools on their sides and to a burnishingtool on their ends, while revolving, to finish the same, as specified.

.8. The method of finishing conical bearing rollers, consisting ofassociating and an ranging a plurality of such rough cut rollers insubstantially vtheir coacting relation, sup-- In witness whereof, I havehereunto set my hand and seal in the presence of two witnesses.- ROBERTSMITH. [L. s-.] lVitnesses:

Jnssn N. ELLswoR'rH, CLYDE HERRIxG'roN.

